Arm chair



FIG. 1 is a left-front perspective view of an arm chair showing my new design;

FIG. 2 is a front perspective view;

FIG. 3 is a left side perspective view, the right side being a mirror image thereof;

FIG. 4 is a top perspective view; and,

FIG. 5 is a rear perspective view thereof.

FIGS. 2 through 5 have been drawn to a reduced scale with respect to FIG. 1. 

The ornamental design for an arm chair, as shown and described. 